Hook



FIG. 1 is a front elevational view of a hook showing our new design;

FIG. 2 is a right side elevational view thereof, the left side elevational view being a mirror image;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof; and

FIG. 6 is a left side, top and front perspective view thereof. 

The ornamental design for a hook, as shown. 